I'm a new home and pool owner. We had the pool professionally opened and the guys told me I need to shock it once a week. That sounded funny and I found your website and did some research. New plan - we are getting rid of the pool guys and DIYing (with your help).
So our pool was opened about 1 month ago. It has looked good since day 4. The last time any chemicals were added were those pucks in the floating doodads. Those are now empty.
Pool looks awesome and feels great to swim in.
I tested today and this is what I got (Taylor 2005 + FAS-DPD)
Taylor 2005 FC 6 TC 10 CC 4 (calculated)
FAS-DPD FC 5.6 CC 0.5
Pool Math is telling me to drain 1/2 the volume of the pool and refill. It is also telling me to add chlorine up to a level of 8.
Any advice/confirmation would be greatly appreciated before I make moves that involve 18,500 gallons of water.